Investigating the impact of preselection on subsequent single-step genomic BLUP evaluation of preselected animals

Table 1 Overview of the various preselection scenarios implemented

Heritability of the breeding goal trait	Type of preselection	Intensity of preselection	Scenario name
0.5	–	No^a	No preselection with high heritability
0.5	Genomic	High^b	High genomic preselection with high heritability
0.5	Genomic	Very high^c	Very high genomic preselection with high heritability
0.3	–	No^a	No preselection with medium heritability
0.3	Genomic	High^b	High genomic preselection with medium heritability
0.3	Genomic	Very high^c	Very high genomic preselection with medium heritability
0.1	–	No^a	No preselection with low heritability
0.1	Genomic	High^b	High genomic preselection with low heritability
0.1	Genomic	Very high^c	Very high genomic preselection with low heritability
0.1	Parental average	High^b	High parental average preselection with low heritability
0.1	Parental average	Very high^c	Very high parental average preselection with low heritability
0.1	Random	High^b	High random preselection with low heritability
0.1	Random	Very high^c	Very high random preselection with low heritability

^aNo preselection: all selection candidates were kept until the subsequent genetic evaluation
^bHigh preselection: 10% of the male and 15% of the female selection candidates were preselected
^cVery high preselection: 5% of the male and 12.5% of the female selection candidates were preselected

ISSN: 1297-9686